Method of and apparatus for rendering timber not otherwise suitable, usable for containers for comestible substances such as butter



. B. ABBEY. METHOD OF AND APPARATUS FOR RENDERING TIMBER NOT OTHERWISE SUITABLE, USABLE FOR CONTAINERS FOR COMESTIBLE SUBSTANCES SUCH AS BUTTER. APPLICATION FILED JUNE I, I920.

8 3 8. Patented Dec. 13, 1921.

2 5, x0 1/ T2 i M 2m I I LI a T T T T /L7 T T 8 if 4' N .5 20 I M 2 i4 1 J "'2 T j UNITED STATES- .PIAITEANT OFFICE.

ERN DISTRICT CO-OIPERATIVE PRODUCE AN'D INSURANCE COMPANY HEIBOURNE, VICTORIA, AUSTRALIA.

LIMITED, 0]

METHOD OF AND AIPPARATUS FOR RENDERING TIMBER, NOT OTHERWISE SUITABLE,

USAIBLE r02; CONTAINERS roR GOMESTIBLE sunsrancns soon AS Burma.

To all whom it may concern:

Be it known that I, BENJAMIN ABBEY, a subject of the King of Great Britain, of Ra lan Parade, Warr'nambool, in the State of Victoria, Australia, factor manager, have invented certain new an useful improvements in improved method of and apparatus for rendering timber not otherwise suitable, usable for containers for comestible substances such as butter, of which the following is a specification.

The object of this invention is the treatment of certain classes of timber to prevent exudation therefrom of deleterious matter which would taint comestible substances such as butter packed in containers made of such timber not so treated.

By the treatment hereinafter described, cheaper classes of timber may be used in the construction of the boxes with the result that manufacturing cost is reduced, and moreover completed boxes may be made in a more expeditious manner than is the case in the known methods of treating timber for the same purpose.

Broadly stated, the salient feature of this invention consists in heating the timber surface to be treated and while heated apply- -ing a suitable impregnating material to such surface which will constitute the interior surface of container.

In a practical application of the invention the timber is fed at a suitable rate along the surface of a heated table and finally passed between a lacquering roller and a pressure roller to force the lacquer or paraffin or other suitable impregnating material well into the heated timber so as to give a good and even coating to the surface thereof.

In order to insure the timber being heated to a degree necessary to insure a regular -coating of defined thickness of the lacquer or parafiin, it is important that the rate of travel of the timber over the table be regulated and the necessary rate has been proved by experiment to be at the rate of about one hundred feet per minute.

It is also necessar to insure surface contact of the timber with the heated table and for this purpose suitable means consist of superposed rollers and pressure bars between which the timber is fed. A practical illustration of the apparatus Specification of Letters Patent. Patented Dc. 1 3 1921. Application filed June 1, 1920. Serial No.,385,58 1.

outlet 5.

At the feed end of the stand beyond the chamber there are suitably mounted one.

above the other a supportin roller 6 and a pressure roller 7 between w ichthe timber.

1s fed, the top of said lower roller being flush with the surface of the table. These rollers are mounted respectively on shafts" 8 and 9 journaled in bearings, the upper ones 10' each having a slot 11 for adjustment to permit timber of various thicknesses to pass between the rollers.

At a short distance from the discharge end of the stand an open vessel 111 is fixed in the heating chamber to contain the lacquer or paraffin L and an applying 0r transfer roller 12 is-mounted in said vesselwith its top flush with the surface of the table. Above said transfer roller is a pressure roller 13 which forces the lacquer well into the heated surface of the timber as said timber is discharged between said rollers.

The rollers 12, 13 are mounted in similar manner to the rollers 6 and 7 and are preferably. driven at the rate of about one hundred feet per minute and by sprocket gearing deriving motion from a pulley 14 on a prime motion shaft 15 having a'sprocket 16 and chain 17 which latter passes over sprockets 18, 19, 20 and 22 on the spindles of the rollers and an intermediate idle sprocket 21 in the manner illustrated as .to rotate the respective rollers of each pair in opposite directions. -'In order to keep the chain taut, a sprocket 23 mounted on an arm 24 pivoted to the stand rests upon and gears w1th the chain.

For the purpose of causing a close adherence of the timber to the table and thus insuring the timber being uniformly heated a u I o it IS provlded wlth a steam inlet 4'a'nd an to the necessary degree while-the timber is traveling between the feed and delivery rollers and beyond the matter, the apparatus is provided with pivoted pressure bars 25 which lie upon the timber and keep same down by their weight.

One end of each bar is bent upwardly and formed with an eye 28 clamped to a transverse shaft 26 by set screws 29, said shaft being rotatabl mounted in bearings 27 on the stand. lternatively the shaft may be non-rotatable and the pressure bars pivoted on same.

As illustrated the bars are adjustable along the shaft to suit the width of timber being treated and said bars are fixed by the set screws 29 and moreover the ends of the bars remote from their pivotal ends may be braced by transverse battens 30 formed with holes to engage pins 31 on the bars.

I claim:

1. Method of treating timber for the pur ose specified consisting in feeding the timher at a suitablerate along the surface of a heated table while maintaining the tim-' ber in close contact with the table surface and applying lacquer to the heated surface of the timber.

2. Method of treating timber for the purpose specified consisting in feeding the timber at a suitable rate along the surface of a heated table while maintaining the timber in close contact with the table surface and applying lac uer by pressure to the heated surface of t e timber.

3. An apparatus for treating timber comprising a heated chamber having a table top, an open vessel in said chamber, a. transfer roller in the vessel, means for feeding timber along the table, and means for actuating the roller and feeding means.

4. An apparatus for treating timber comprisinga heated chamber having a table top, and open vessel in the chamber, a transfer roller in the vessel, pressure rolls for feeding timber along the table, and means forv actuating the roller and rolls.

5. An apparatus for treating timber comprising a heated chamber having a table top,

an open vessel, means in the chamber, a

transfer roller in the vessel, means for feeding timber along the table, and pressure bars for maintaining the timber in contact with the table top.

6. An apparatus for treating timber comprising a heated chamber having a table top, an open vessel in the chamber, a transfer roller in the vessel, means for feeding timber along the table, transverse shafts mounted above the-table, and pressure bars pivoted on the shafts and adjustable along the latter.

7. An apparatus for treating timbercomprising a heated chamber having a table top, an open vessel in the chamber, a transfer roller in the vessel, rollers for feeding timber along the table top and in contact with the transfer roller, and pivoted pressure bars for maintaining the timber in contact with the top during 1ts movement along the same.

8. n apparatus for treating timber comprising a heated chamber having a table top, an open vessel in the chamber, a transfer roller in the vessel, means for feeding timber along the table top including a pressure roll mounted above the transfer'roller for maintaining the timber in contact with the latter.

9. An apparatus for treating timber comprising a heated chamber having a table top, an open vessel in the chamber, a pair of rollers at the receiving end of the table top for feeding timber along and in contact with the table top, and a pair of superposed pressure rolls near the discharge end of the top, one of the latter rolls being mounted in the vessel.

10. An apparatus for treating timber comprising a heated chamber having a table top, an open vessel in the chamber, a pair of rollers at the receiving end of the table top for feeding timber along the table top, a pressure roll and a lacquer transfer roll near the discharge end of the table and pivoted pressure bars arranged above the table between the sets of rolls.

Dated this nineteenth day of A ril, 1920.

BENJAMIN A BEY. 

